另外一个比较常见的情况就是授权，比如说只有那些具有特殊权限的用户可以删除产品或是更改单价。
Another common scenario is authorization perhaps only users in a particular role can delete products or can change the UnitPrice value.
每个产品后面都有三个链接，这样我们可以在显示产品、编辑项，或删除它时看到产品的样子。
Each product has three links after it so we can see how the product looks when we display it, edit the item, or remove it.
网站也不是没有风险。拒绝删除产品恶评可能招致诽谤官司。
Websites often run the risk of being sued for defamation if they refuse to delete comments about certain products.
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